Variations saisonnières de la qualité du sperme chez le bélier Ile-de-France. I. Etude de la morphologie cellulaire et de la motilité massale (*)
About: This article is published in Reproduction Nutrition Development.The article was published on 1980-01-01 and is currently open access. It has received 60 citations till now.
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TL;DR: There was improvement in all semen and spermatozoa traits with age, the means at 12 months being consistently superior to values at 6 and 9 months of age, and differences were attributed primarily to nutrition.
119 citations
Cites background from "Variations saisonnières de la quali..."
...Season has also been reported to have signi®cant effect on percent live spermatozoa in temperate climates (Colas, 1980; Dufour et al., 1984)....
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TL;DR: Seasonal changes in the activity of the antioxidant enzyme defense system comprising superoxide dismutase, glutathione reductase, GPx and catalase in seminal plasma of mature Rasa Aragonesa rams were determined.
103 citations
TL;DR: Seasonal variations in semen characteristics of Persian Karakul rams trained to serve the artificial vagina are evaluated for volume, total sperm output, mass motility and the percentage live sperm.
96 citations
TL;DR: The existence of differences among rams within each breed in semen quality and quantity makes it necessary to perform a semen evaluation on individual basis in order to select the best males before they are used for breeding.
91 citations
TL;DR: It is concluded that Payoya bucks exhibit large seasonal variation in their reproductive activity, and higher feeding level allowed a better sexual behaviour in bucks in late spring, when male effect is used on the local livestock to breed females.
79 citations